YS 63
I just fired my second YS 63 up on Saturday night with no problems.
After the break in tank, about 20 minutes, set rich for break in I was getting:
11,000 RPM
Wildcat YS20/20
OS type F
APC 12-7
My repaired ultra stick with 12 oz of fuel weighs 6lbs, and the YS 63 will pull it up and out of sight on take off.
I love it.
WOOD